Anthropic warns over unauthorized sellers

Private-company stock is supposed to be hard to move around. That is the point. But AI hype has turned Anthropic shares into a kind of gray-market prize, and now the company is pushing back hard. On May 12, Anthropic updated an investor warning to name eight firms it says are offering unauthorized access to its stock, and it told buyers to assume those deals are invalid. ### What did Anthropic actually do? Anthropic did not announce a funding round or a lawsuit. It updated a public warning about “unauthorized stock sales and investment scams” and explicitly named Open Doors Partners, Unicorns Exchange, Pachamama Capital, Lionheart Ventures, Hiive, Forge Global, Sydecar, and Upmarket as firms not authorized to provide access to buy or sell its shares. (bloomberg.com) ### Why is the warning so blunt? Because Anthropic is not just saying “be careful.” It is saying many of these transactions may not count at all. The company’s notice says any sale, transfer, or disposal of rights in Anthropic stock without board approval is void under its transfer restrictions, and that buyers in those deals may never be recognized on the company’s books. (support.claude.com) ### What kinds of deals is it targeting? Basically, all the workarounds people use when a private company does not want open trading. Anthropic says third parties offering its shares through direct sales, forward contracts, tokenized securities, or similar structures are likely either committing fraud or selling something that may have no value because of the company’s transfer restrictions. It also says special purpose vehicles, or SPVs, are not allowed to acquire Anthropic stock. (support.claude.com) ### Why are people trying so hard to buy Anthropic shares? Because demand for top AI names has gotten absurd. Anthropic has become one of the most sought-after private companies in tech, and recent secondary-market chatter has pushed implied valuations dramatically higher as investors scramble for any pre-IPO exposure. That kind of frenzy attracts legitimate brokers, aggressive intermediaries, and outright scams all at once. (support.claude.com) ### Why does this keep happening with private AI companies? Private companies are staying private longer, but investors still want liquidity and access. That creates a gap. Employees and early backers want ways to sell. Outside buyers want in before an IPO. Platforms step in to match that demand, often using structures that sit one layer away from the actual shares. The catch is that company bylaws and transfer restrictions still control whether those deals are recognized. (moneycontrol.com) ### So can someone buy “Anthropic exposure” and still lose? Yes — that is the whole warning. A buyer might pay real money for a contract, token, or SPV interest that sounds like Anthropic ownership but does not deliver shareholder rights, voting rights, or a recognized place on Anthropic’s cap table. In plain English, you can buy the story without getting the stock. (moneycontrol.com) ### Is this only about fraud? Not quite. Fraud is part of it, but control is the bigger theme. Anthropic is drawing a line around who gets to intermediate its equity and on what terms. That matters for governance, for compliance, and for who eventually gets liquidity in one of the hottest private markets in tech. Bloomberg’s report makes clear the company is trying to shut down a widening secondary trade it does not recognize. (support.claude.com) ### Bottom line? Anthropic is reminding everyone that private-company shares are not crypto tokens and not public stocks. You do not own them just because someone on a platform says you do. In an AI market where demand is outrunning the plumbing, that distinction suddenly matters a lot. (support.claude.com) (bloomberg.com)